US2525960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple head gas burner unit
Assignee: Individual
•
Filing: 1944-09-19
•
Granted: 1950-10-17
•
Expires: 1964-09-19
Abstract
No abstract record available.
Inventors
- 👤 Walter M Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:37
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/02; F23D14/04; F23D14/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US557506A
Cited
US959244A
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US1732071A
Cited
US1863468A
Cited
US2074531A
Cited
US2142014A
Cited
GB526476A
Cited
US2251710A
Cited
US2318985A
Cited
GB781408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |